Horizontally swingable and vertically movable jointer guard



Nov. 3, 1959 E. J. C. ENGEL HORIZONTALLY SWINGABLE AND VERTICALLY MOVABLE JOINTER GUARD Filed March 22, 1957 INVENTOR.

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H TTORNE Y United States Patent 2,911,021 HORIZONTALLY SWINGABLE AND VERTICALLY MOVABLE IOINIER GUARD Elmer J. C. Engel, Sioux Falls, S. Dak. Application March 22, 1957, Serial No. 647,801 3 Claims. (Cl. 144251) My invention relates to a jointer guard.

An object of my invention is to provide a jointer guard which besides accommodating heavier or thicker pieces of wood, will also accommodate thin pieces of wood, and will also allow the thin pieces of wood to be planed without danger of the operators hand coming in contact with the cutting blades of the jointer.

A further object of my invention is to provide such an arrangement in a simple construction and which will not get out of order.

With these and other objects in view, my invention consists in the construction, arrangement, and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure l is a plan view of the guard and a portion of the jointer on which the guard is used,

Figure 2 is a sectional view of Figure 1 taken along the lines 22 thereof, and

Figure 3 is an enlarged sectional detail taken along the lines 3-3 of Figure 1.

My invention contemplates the provision of a guard which will allow the planing or cutting of thin strips of material without the danger of injuring the hand of the operator, and which guard can also be used in the ordinary manner for heavier pieces of material.

I have used the character to designate the table portion of the jointer, the character 11 indicating the usual opening in which is adapted to rotate the cutting member 12 having the sharpened blades 13, the character 14 indicating portions of the shaft for driving this member, and I have used the character 15 to indicate the adjustable side piece against which the pieces to be out are usually placed, the character 16 designating in dotted lines a heavier piece of such material, the character 17 indicating a relatively thin piece of wood which is to be cut. I

I have further used the character 18 to indicate a vertically positioned pin which is rotatably and vertically slidably received within the opening 19 in the table 10,

and attached to the pin 18 is the relatively larger diam- Y eter boss 20, which boss is a portion of the flat plate 21, the flat plate 21 providing the guard itself, the plate 21 including the extending portion 22 which is a portion of the boss 20, the member 21 including the curved edge at 23.

Attached to the table 10 at 24 is a coiled spring 25 which is attached at 26 to the car 27 which is secured to the edge 28 of the guard 21. Extending downwardly and integrally from the guard plate 21 are the two pairs of ears 29, one of each pair at each side, which receive the shafts 30, which shafts 30 pass through a pair of spaced rollers 31, which rollers can be made of resilient rubber, hard rubber, or any other desired material.

The guard is used in the following manner. When thicker pieces of wood are to be planed, such as the piece 16 for instance, the piece is fed across the rotatable cutting member 12 in the usual manner and will bear against the curved portion 23 of the guard, the guard thereby protecting the operator.

However, when cutting or planing thin pieces of wood, in the old types of guards regardless of this feature, the fingers of the operator would be so close to the blades 13, that in many cases the fingers would be severely cut 2,911,021 Patented Nov. 3, 1959 or injured. In the present invention this objectionable feature is completely eliminated in the following manner. When cutting thin strips such as the strip 17, the guard 21 is placed in the dotted position shown in Figure 1, and the strip 17 is pushed beneath the plate 21 and under the rollers 31 whereby the other hand of the operator can be placed upon the plate 21 and pushed downwardly, so that as a result the strip is forced downwardly against the blades and at the same time the other hand can force the strip beneath the rollers, these rollers permitting the strip to pass easily, and as a result the hands can in no way be injured, since the entire guard will be above the cutting members.

It will thus be obvious that any shape or thickness of wood can be planed by the use of this guard, and including the safety features mentioned. It will also be obvious that slight modifications could be made without departing from the essential spirit of the invention.

It will now be seen that I have provided the advantages mentioned in the objects of my invention with further advantages being readily apparent.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

1. A jointer guard comprising a horizontally swingable and vertically movable horizontal plate adapted to pass over the cutting member of a jointer, said plate including a plurality of horizontal elongated rollers journalled thereto and thereunder, means for permitting spacing of said plate and said rollers from the table portion of said jointer, whereby thinner strips of material can be passed under said rollers and in engagement therewith with said plate covering said cutting member, said rollers then being generally at right angles to the longitudinal movement of said strips.

2. A jointer guard comprising a horizontally swingable and vertically movable horizontal plate adapted to pass over the cutting member of a jointer, said plate including a plurality of horizontal elongated rollers journalled thereto and thereunder, means for permitting spacing of said plate and said rollers from the table portion of said jointer, whereby thinner strips of material can be passed under said rollers and in engagement therewith with said plate covering said cutting member, said rollers then being generally at right angles to the longitudinal movement of said strips, said plate being pivoted to said table portion of said jointer.

3. A jointer guard comprising a horizontally swingable and vertically movable horizontal plate adapted to pass over the cutting member of a jointer, said plate including a plurality of horizontal elongated rollers journalled thereto and thereunder, means for permitting spacing of said plate and said rollers from the table portion of said jointer, whereby thinner strips of material can be passed under said rollers and in engagement therewith with said plate covering said cutting member, said rollers then being generally at right angles to the longitudinal movement of said strips, said plate being pivoted to said table portion of said jointer, a vertically positioned pin providing the pivotal attachment of said plate to said table, said pin being movable upwardly thereby permitting said spacing.

References Cited in the file of this patent UNITED STATES PATENTS 519,698 Daly May 5, 1894 552,610 Fisher Jan. 7, 1896 2,747,628 Ford May 29, 1956 

